The science of medicine in particular seems to be always in a critical condition, and the bacillus bobs up and down in a manner that is "painful and free." Like Hamlet's father's ghost, it eludes our question: we know not if it is "a spirit of health or goblin damned," angel or demon or delusion. The microbe of to-day is the myth of to-morrow. Surgery is the only department of medicine which has made real advances in our century. The rest is guesswork and experiment on vile bodies. I do not know why the Peculiar People should be persecuted for refusing vivi-injection. Tolstoï, a friend of his told me, breathes fire and fury against the doctors, and will have none of their drugs or their doctrines, and he is not alone in believing that every tombstone is a monument to some doctor's skill. "When doctors disagree," says the proverb. But do they ever agree--unless they consult? I went to an eminent oculist once, who anointed my eyes with cocaine in order to make the pupils dilate. But my pupils refused to obey. He was dumfoundered, and said that such a refusal was unheard of: it contradicted all experience and all the books. I felt quite conscience-stricken. He tried again and again, but my pupils remained obdurately small. I apologised for my originality, and he peered at my eyes minutely, evidently expecting to find the new humour. So I suggested he might try Horror, which I understood from the novelists made the pupils dilate; but he replied that that would not be professional. He told me, however, a fact which I thought well worth his fee. An erudite scientist had devoted a monograph to cocaine, but failed to discover the one fact about it which was worth knowing, and which had raised cocaine to the first rank--to wit, that applied externally it was an anaesthetic, so that if you put a drop on your tongue you might bite your tongue without hurting yourself. Doubtless the poor man was ready enough to bite his tongue when his book was spoilt by the discovery. But I cannot help thinking that his case was typical of science--which is appallingly exhaustive and self-satisfied, but seems just to miss the one essential thing.